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首页> 外文期刊>Catalysis science & technology >A design of a fixed bed plasma DRIFTS cell for studying the NTP-assisted heterogeneously catalysed reactions
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A design of a fixed bed plasma DRIFTS cell for studying the NTP-assisted heterogeneously catalysed reactions

机译:固定床的设计等离子体漂浮细胞研究NTP-assisted不均匀催化反应

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摘要

A newly developed diffuse reflectance infra-red Fourier transform spectroscopy (DRIFTS) cell for the in situ study of non-thermal plasma (NTP)-assisted heterogeneously catalysed reactions is presented and evaluated using methane oxidation over a Pd/Al2O3 catalyst. By using the new fixed bed plasma DRIFTS cell coupled with mass spectrometry, the NTP discharge is generated inside the catalyst bed and allows simultaneous, in situ DRIFTS analysis to be undertaken. The spectroscopy has revealed that the formation of surface species, e.g. formate and carbonate, is significantly influenced by NTP generation under methane oxidation conditions at different voltages when comparing with the conventionally thermal activation. During the NTP-DRIFTS-MS measurements, it is also found that there is no signal interference between IR beam and plasma plume, making this a viable DRIFTS system for studying the plasma catalysis.
机译:一个新开发的漫反射率红外线傅里叶变换光谱学(飘)细胞的原位研究。低温等离子体(NTP)资助建设不同类地加快反应提出和评估使用甲烷氧化/ Pd /氧化铝催化剂。使用新的固定床等离子体漂浮细胞再加上质谱,国家结核控制规划放电生成在催化剂床,并允许吗同时,原位漫反射红外光谱分析承担。表面物种的形成,如甲酸和碳酸,明显受国家结核控制规划的影响代下甲烷氧化条件不同的电压比较时传统热激活。NTP-DRIFTS-MS测量,也发现之间没有信号干扰红外光束和等离子体羽流,使这一个可行的漂移系统研究等离子体催化。

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